package com.wowo.day1;


import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;


import java.io.IOException;
import java.io.Reader;

public class MyBatisUtil {
    private static SqlSessionFactory sqlSessionFactory = null;
    public static SqlSessionFactory getSqlSessionFactory1() throws IOException {
        if (sqlSessionFactory == null){
            Reader reader = Resources.getResourceAsReader("conf.xml");
            return new SqlSessionFactoryBuilder().build(reader);
        }
        return sqlSessionFactory;
    }

    public static SqlSessionFactory getSqlSessionFactory() throws IOException {
        //获得SqlSessionFactory对象
        Reader reader = Resources.getResourceAsReader("conf.xml");
        SqlSessionFactory sqlSessionFactory =
                new SqlSessionFactoryBuilder().build(reader);
        return sqlSessionFactory;
    }
    public static void main(String[] args) throws IOException {
        //获得SqlSessionFactory对象
        Reader reader = Resources.getResourceAsReader("conf.xml");
        SqlSessionFactory sqlSessionFactory =
                new SqlSessionFactoryBuilder().build(reader);
        System.out.println(sqlSessionFactory);
    }
}